I-Scandium oxide (Sc₂O₃), ikhompawundi yemichiza eyenziwe nge-divalent anion oksijini kunye ne-trivalent scandium cations, ibonakala njengomgubo omhlophe, owahlulwe ngokucokisekileyo phantsi kweemeko ze-ambient, ukubonakala kwayo okungabonakaliyo okubandakanya ubutyebi beempawu ezinomdla ze-physicochemical ezixhasa indima yayo ephawulekayo kwiintlobo ezahlukeneyo zezicelo zobuchwepheshe. Iimpawu eziphambili zale sesquioxide, ezibandakanya iimpawu zayo zomzimba kunye nokusebenza kwakhona kweekhemikhali, azikho nje izinto ezinomdla kwimfundo kodwa kunoko zizigqibo zokusetyenziswa kwayo kwiinkalo ezihlukeneyo, ukusuka kwizisombululo zokukhanyisa ezisebenza kakhulu ukuya ekudalweni kweealloyi zetsimbi eziphuculweyo ezineempawu zokusebenza eziphuculweyo.
Intshayelelo yeBreif
| Imveliso | I-Scandium oxide, iScandium(III) oxide |
| Cas | 12060-08-1 |
| MF | Sc2O3 |
| Ucoceko Sc2O3/REO | 99% ~ 99.999% |
| Ubunzima beMolekyuli | 137.91 |
| Ukuxinana | 3.86 g/cm3 |
| Indawo yokunyibilika | 2485°C |
| Imbonakalo | Umgubo omhlophe |
| Ukunyibilika | Ayinyibiliki emanzini, i-soluble ngokuphakathi kwii-acids zeminerali ezomeleleyo |
| Uzinzo | I-hygroscopic kancinci |
| Iilwimi ezininzi | I-ScandiumOxid, i-Oxyde De Scandium, i-Oxido Del Scandium |
| Indawo yokunyibilika | 2403°C |
| IMisa ngqo | 137.897 g/mol |
| IMisa yeMonoisotopic | 137.896564 Da |
| Uphawu | Ixesha |
Ubume bomzimba be-scandium oxide buphawulwa ngokomelela kwe-thermal okuphawulekayo, kubonisa iqondo eliphezulu lokunyibilika eliqhelekileyo eliwela phakathi koluhlu lwama-2400 ukuya kuma-2485 degrees Celsius, ubungqina bemikhosi eyomeleleyo ye-interatomic ngaphakathi kwe-crystalline lattice. Indawo yokubila kwayo iphakame ngakumbi, igxininisa ngakumbi ubume bayo bokuchasa kunye namandla ayo okumelana nemo engqongileyo yobushushu obugqithisileyo ngaphandle kotshintsho olucimayo lwesigaba. Ngobunzima obuthile obumalunga ne-3.86 grams cubic centimeter nganye, inoxinano oluphakathi, into ephembelela ukuqwalaselwa kobunzima bubonke kwizicelo apho ukukhanya kwesixhobo kuyiparamitha yoyilo olubalulekileyo. Ngapha koko, i-scandium oxide ibonisa ukunganyibiliki okuphawulweyo kwimithombo yeendaba enamanzi, uphawu oluphuma kwi-robust ionic bonding ngaphakathi kwesakhiwo sayo, nangona luhamba ngokukhawuleza kwi-acids ye-mineral concentrated xa ifudumeza, yenze i-salts ye-scandium ehambelanayo, ukuziphatha kweekhemikhali ezisetyenziswe kwiinkqubo ezahlukeneyo zokwenziwa kunye nokucoca. Ngokwekhemikhali,iscandium oxideibonisa ukuthambekela kwe-amphoteric, nangona isiseko sayo sibonakala ngakumbi kune-acidity yayo, ukuyivumela ukuba isabele ngeentlobo ze-asidi ukwenza iityuwa. Okubangel 'umdla kukuba, iyakwazi ukufunxa i-carbon dioxide ye-atmospheric, ngokukodwa xa kukho ukufuma, okukhokelela ekubunjweni kwe-carbonates yomhlaba okanye i-hydroxycarbonates, into efuna ukugcinwa ngokucophelela ukugcina ukucoceka kwayo.
Ngaphandle kweempawu zayo eziphathekayo, i-scandium oxide ibonisa i-suite ekhangayo yezinto ezibonakalayo kunye ne-electronic properties ezisanda kufakwa kwi-teknoloji ephezulu. Isalathiso saso esihlaziyayo, esiphakamileyo malunga ne-1.85 ukuya kwi-1.96 ngokuxhomekeke kwi-wavelength kunye nobuninzi bezinto eziphathekayo, zenza ukuba zixabiseke ekwenziweni kwee-optical coatings kunye ne-lens, ukwandisa ukusebenza kakuhle kokuhanjiswa kokukhanya kunye nokukhwabanisa. Ukubonisa ukuhanjiswa okubalulekileyo kuzo zonke iindawo ezibonakalayo kunye nekufutshane ne-infrared yespectrum ye-electromagnetic, isebenza njengenxalenye ebalulekileyo kwiifestile zamehlo kunye ne-substrate ecacileyo yeefilimu ezincinci kwizixhobo ze-optoelectronic. Ngaphaya koko, xa idingwe ngobuchule ngee-ion zomhlaba ezinqabileyo ezithile, i-scandium oxide ibonisa i-photoluminescence, ikhupha ukukhanya kobude obuthile bobude phezu kwemincili, indawo esembindini wokusetyenziswa kwayo ekukhanyeni okusebenzayo kwamandla ombane kunye nobuchwepheshe bomboniso obuphambili. Kwimeko yayo yangaphakathi, i-scandium oxide isebenza njenge-insulator yombane, ebonakaliswe ngokumelana okuphezulu, uphawu olubalulekileyo kwisicelo sayo njengesixhobo se-dielectric kumacandelo e-elektroniki, ukuthintela ukuvuza okungafunekiyo kwangoku. Ukungaguquguquki kwayo okuphezulu kwe-dielectric kukwayenza ilungele ukusetyenziswa kwii-capacitors, iququzelele ukugcinwa kwamandla okusebenzayo ngaphakathi kweesekethe zombane.
Ukuqonda i-macroscopic yokuziphatha kwe-scandium oxide, ukuqonda kwesiseko sayo se-athom yoyilo kubaluleke kakhulu. Ikhazimlisa kwisakhiwo se-cubic Bixbyite, i-motif eqhelekileyo phakathi kwe-sesquioxides yomhlaba enqabileyo, ebonakaliswe ngokucwangciswa kwe-cubic egxininiswe ebusweni bee-anions ze-oxide kunye ne-scandium cations ezihlala kwiindawo ezithile ze-octahedral, nangona zinezithuba ze-anionic. Ezi mpawu zesakhiwo zilawula imigama ye-interatomic kunye nee-engile zokudibanisa, ekugqibeleni ziphembelela ukuzinza ngokubanzi kunye neempawu. I-odolo ephezulu kunye neyomeleleyo yokudibanisa i-ionic ngaphakathi kwale crystal lattice inegalelo elibonakalayo kwindawo ephezulu yokunyibilika kwezinto kunye nokungangeni kweekhemikhali phantsi kweemeko ezininzi.
Ukuhamba ngaphaya kweempawu zayo ezisisiseko, i-scandium oxide ibonisa uluhlu lweempawu ezihambele phambili kunye nezisakhulayo ezitsala umdla obalulekileyo kuphando olutsha. Umphezulu wayo ubonisa umsebenzi we-catalytic wotshintsho oluthile lweekhemikhali, kunye nokukwazi kwayo ukubhengeza iimolekyuli ezahlukeneyo kuphononongwa kubuchwephesha boluvo. Ngelixa isigqubuthelo sombane, sinomgangatho olinganisekayo wobushushu, ovumela ukutshabalalisa ubushushu, eyona nto ibalulekileyo kwizicelo zombane ezinamandla aphezulu. I-coefficient yayo ephantsi yokwandiswa kwe-thermal iqinisekisa uzinzo lwe-dimensional kuluhlu lwamaqondo obushushu, uphawu olunqwenelekayo kubunjineli obuchanekileyo. Ngaphaya koko, ukuqina kwayo okubalulekileyo kunye nokuqina kokwaphuka okuphakathi kunegalelo ekomeleleni kwayo kwindawo efunwayo koomatshini.
Ekugqibeleni, ukudityaniswa okukhethekileyo kwe-scandium oxide yomzimba, iikhemikhali, i-optical, i-electronic, kunye nepropathi yomatshini ichaza uluhlu lwazo kunye nolwandiso lwezicelo. Ukuzinza kwayo kwe-thermal kunye neempawu ze-luminescent zixhasa ukusetyenziswa kwayo ekukhanyeni okuphezulu. Isakhono saso sokwandisa amandla kunye nokushisela kweealloyi ze-aluminium, ngokucokiswa okuziinkozo, kubaluleke kakhulu kwi-aerospace kunye nobunjineli beemoto. Iimpawu zayo ze-dielectric kunye ne-insulating zisetyenziswa kwii-ceramics ze-elektroniki kunye ne-capacitors. Isalathiso salo esihlaziyiweyo kunye nokungafihli kuxhatshazwa kwiingubo zokukhanya. Umsebenzi we-catalytic womphezulu wayo uphononongwa kwi-chemical synthesis, kwaye amandla ayo okubhengeza asetyenziswa kubuchwephesha boluvo. I-doping elungiselelwe i-scandium oxide enezinto ezinqabileyo zomhlaba yenza ukuba kudalwe iiphosphors ezikhethekileyo zokukhanyisa okuphezulu kunye nezicelo zokubonisa. Njengoko uphando luqhubeka nokutyhila ubuqhetseba beempawu zalo kunye nokuphonononga iindlela zokudibanisa inoveli, ukusetyenziswa kwe-scandium oxide kukulungele ukwandiswa ngakumbi, ukuqinisa indima yayo njengento ebalulekileyo kwinkqubela phambili yezobuchwepheshe.
Ixesha lokuposa: May-08-2025